Replaced hydraulic clutch master
Just replace the clutch master cylinder in my '85 GMC k2500, here's what I learned:
Just a pin and clip hold it onto the clutch pedal, then 2 bolts hold it in place under the hood. Remove the hydraulic line leading to the slave and pulled off the hose leading to the fluid reservoir.
Installation just the reverse. Had difficulty starting the hydraulic line, should have started it before bolting in the new cylinder.
Couldn't get it to bleed properly at first, ran thru 2 cans of fluid but still got an occasional air bubble and no pedal pressure. Finally pulled the slave cylinder, tilted the bleed valve up at a 45 degree angle and it bled in just a few strokes. Replace the slave (2 bolts) and good to go, great pedal pressure.
Discovered that the neutral start switch plunger no longer reached far enough
into the switch to activate it due to the new pedal position. Removed the switch and adjusted the plunger stop forward about 1/4" then replaced the switch.
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